One of the first questions Wagga Wagga homeowners ask after discovering foundation problems is: “Will my insurance cover this?” The answer is almost always more complicated, and more disappointing, than they hope. Understanding how home insurance treats foundation problems in NSW is essential before you file a claim, make any repairs, or make decisions about your property. For detail specifically on insurance claims, see our guide on insurance claims for foundation damage in Wagga.
Quick answer (BLUF)
Standard Australian home insurance policies do not cover gradual foundation movement caused by reactive clay soil, tree roots, drought, or poor drainage. Cover may exist for sudden defined events such as storm, flood (with endorsement), or burst pipes, but insurers often dispute whether damage is “sudden” or “gradual.” Thorough documentation and a structural engineer’s report are essential for any claim.
What standard policies cover
Home building insurance in Australia covers the structure of your home against defined insured events. The list of insured events varies by policy but typically includes:
- Fire
- Storm, rainwater, hail, or snow
- Lightning
- Explosion
- Earthquake
- Flood (in many modern policies, following reforms after the 2022 floods)
- Burst, leaking, or overflowing fixed pipes
- Impact (vehicle, falling tree, etc.)
- Malicious damage and vandalism
Foundation damage that results directly from one of these events may be claimable. For example, if a burst pipe beneath your slab causes significant soil movement and cracking, the pipe damage and resulting structural damage may be covered. If a flood event causes your stumps to be compromised by inundation, flood cover (where endorsed) may apply.
What is almost always excluded
The vast majority of foundation damage in Wagga Wagga falls into categories that standard policies explicitly exclude:
Gradual deterioration. Any damage that has developed gradually over time, whether from reactive clay movement, progressive stump decay, or slowly worsening drainage, is excluded as “gradual deterioration” or “wear and tear.” Insurers argue that these are foreseeable maintenance issues, not sudden insured events.
Reactive soil movement. Some policies contain specific exclusions for damage caused by soil expansion, shrinkage, or reactive soils. Given Wagga’s predominantly Class H2 and E soil environment, this exclusion is particularly common in the region.
Tree root damage. Damage caused by roots from a tree, whether your own tree, a neighbour’s tree, or a council tree, is typically excluded as a predictable maintenance issue.
Settlement over time. Differential settlement that has occurred over years or decades, even if the consequences are only now becoming visible, is treated as gradual deterioration.
Poor construction or design. If the foundation was inadequately designed or built, damage arising from that inadequacy is typically excluded.
The grey zone: sudden events on a pre-existing weakness
Many real-world claims fall into a contested middle ground. Consider a home on reactive clay that has been slowly settling for years. After a particularly severe dry summer, the hottest on record, the cracking suddenly becomes acute and doors jam. Is this a sudden event (the unusually extreme weather) or gradual deterioration (the cumulative effect of years of reactive clay movement)?
Insurers typically argue for the gradual deterioration interpretation. Homeowners argue the sudden triggering event should attract cover. The outcome often depends on:
- The specific policy wording
- The quality of the engineering evidence
- The jurisdiction and, potentially, the determination of the Australian Financial Complaints Authority (AFCA) if a dispute arises
How to document a claim effectively
If you believe you have a legitimate claim, particularly for a sudden event like a burst pipe, storm, or flood, documentation is critical.
Get a structural engineer’s report immediately. The report should clearly state the probable cause of the damage and, if possible, differentiate between pre-existing gradual movement and fresh movement associated with the claimed event.
Photograph everything before any repair. Insurers need evidence of the damage as it existed at the time of the claim event. Do not clean up, fill cracks, or do any temporary repairs until you have documented the full extent of damage.
Report to your insurer promptly. Most policies require reporting within a defined timeframe after you become aware of the damage. Late reporting can be used to contest a claim.
Record relevant information. The date and nature of the triggering event, the date you first noticed the damage, and any records of the property’s pre-existing condition (previous inspection reports, purchase building inspections) all contribute to a stronger claim.
When to seek a second opinion
If your insurer denies a claim you believe is legitimate, you have rights. The Australian Financial Complaints Authority (AFCA) is the external dispute resolution scheme for insurance disputes in Australia. AFCA determinations are binding on insurers. If a claim is denied and you have good engineering evidence supporting your position, lodging an AFCA complaint is a realistic option.
FAQs
My insurer says the damage is “gradual deterioration”, can I challenge this?
Yes. If you have evidence that the damage resulted from or was substantially worsened by a defined insured event (flood, storm, burst pipe), and the insurer is characterising the entire loss as gradual deterioration, you can dispute this through AFCA. The quality of your structural engineer’s report will be pivotal.
Does the government’s home guarantee scheme cover foundation problems?
The various federal and state first home buyer guarantee and grant schemes relate to loan security and do not provide insurance against structural or foundation defects. Separate building insurance is required.
Should I fix the foundation before or after making an insurance claim?
Always after, or at least only after documenting the full extent of damage with photographs and a structural engineer’s report. If you repair damage before your insurer has the opportunity to inspect it, they may use that as grounds to contest the claim.
Can I get insurance that specifically covers reactive clay movement?
Some specialist building insurers offer broader cover that includes subsidence or reactive soil movement as a defined event. These products exist in the Australian market but are more expensive than standard cover. If you own a property with known Class H2 or E soil conditions and a history of movement, a specialist broker may be able to source more appropriate cover.